{
  "protocolVersion": "v1",
  "fixtureSet": "heartbeat",
  "fixture": "unknown",
  "description": "Unknown optional members and capabilities are accepted, discarded before hashing, and never stored or echoed.",
  "requestAdditions": {
    "telemetryProfile": "extended",
    "authorization": "Bearer non-functional-example",
    "capabilities": ["heartbeat", "future.capability"],
    "coarseNodeSummary": {"rackNames": ["customer-rack"]}
  },
  "expected": {
    "decision": "ACCEPT",
    "storedCapabilities": ["heartbeat"],
    "discarded": ["authorization", "future.capability", "telemetryProfile", "coarseNodeSummary.rackNames"],
    "echoed": []
  }
}